CVE-2026-45205 — MEDIUM (5.3)

Q: How severe is CVE-2026-45205?

CVE-2026-45205 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.

Q: Is there a patch for CVE-2026-45205?

Check the references section above for vendor advisories and patch information. Affected products include: Apache Commons Configuration.

Vulnerability Description

Uncontrolled Recursion vulnerability in Apache Commons. When processing an untrusted configuration file, Commons Configuration will throw a StackOverflowError for YAML input with cycles. This issue affects Apache Commons: from 2.2 before 2.15.0. Users are recommended to upgrade to version 2.15.0, which fixes the issue.

CVSS Score

5.3

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

Availability

LOW

Affected Products

Vendor	Product	Versions
Apache	Commons Configuration	>= 2.2, < 2.15.0

Related Weaknesses (CWE)

CWE-674

References

https://github.com/apache/commons-configuration/pull/634Issue TrackingPatch
https://lists.apache.org/thread/q3q3j10ohcqhs6o0rg1v7kz6kk27vtkkMailing ListVendor Advisory
http://www.openwall.com/lists/oss-security/2026/05/14/5Mailing ListThird Party Advisory

FAQ

What is CVE-2026-45205?

CVE-2026-45205 is a vulnerability with a CVSS score of 5.3 (MEDIUM). Uncontrolled Recursion vulnerability in Apache Commons. When processing an untrusted configuration file, Commons Configuration will throw a StackOverflowError for YAML input with cycles. This issue a...

How severe is CVE-2026-45205?

CVE-2026-45205 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-45205?

Check the references section above for vendor advisories and patch information. Affected products include: Apache Commons Configuration.